/**
 * Copyright (C) 2010-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.googlecode.flyway.core.util.scanner;

import java.io.IOException;
import java.util.Enumeration;
import java.util.Set;
import java.util.TreeSet;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;

public class ZipFileLocationScanner extends JarFileLocationScanner {
    public boolean acceptUrlProtocol(String protocol) {
        return "zip".equals(protocol);
    }

    @Override
    public Set<String> findResourceNames(String directory, String zipUrl) throws IOException {
        String zipFilePath = extractZipFilePath(zipUrl);
        return findResourceNamesFromJarFile(zipFilePath, directory);
    }

    private String extractZipFilePath(String zipUrl) {
        return zipUrl.substring(0, zipUrl.indexOf("!"));
    }
}
